Grave marker



FIG. 1 is a top front side perspective view of a grave marker showing my new design;

FIG. 2 is a front view of the grave marker;

FIG. 3 is a rear view of the grave marker;

FIG. 4 is a left side view of the grave marker;

FIG. 5 is a right side view of the grave marker;

FIG. 6 is a top view of the grave marker; and,

FIG. 7 is a bottom view of the grave marker. 

CLAIM The ornamental design for a grave marker, as shown and described. 